I'm not an engineer but I have read quite a bit on the care of lithium ion batteries and I've never read of that being a problem. That doesn't mean that it's not but my guess is that it's not. I wouldn't hesitate to do it myself if I had a reason.
These batteries are pretty sturdy. Most of the things that can shorten their lives have just a small effect. For example there's a chart on batteryuniversity.org that shows that batteries last longer if you keep them charged around 40% to 60%. This is from memory so I may not have that exactly right. But if you charge them fully it just takes a little bit off their overall lifetime. I always charge mine to 100% even though I know that isn't optimal. I just find it convenient and my batteries tend to last a long time.
I know this isn't a real answer to your question but I hope it helps.
Barry
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